Improvement in steam-generators



n air e anni @attire 4 WILLIAMS., Y yWILLIAM E. 'WEsToitA TnrTI-TANIEL4l WESTON,

v l y *BURT EEETT, or STEVENS PoTNTWiscoNsiN.

Letters Patent No. 107,254.0,A dated September 27, 1870.

l I V l IMPROVEMENT-m STEAWGENERATORS. f

` The Schedule referred to in these Letters Patent and making part ofthe same.

t We, WILLTAMJ WnsToN, `Vilnnmar It. WESTON, `NATrrnNIELWnsTomand `BunTBRETT, of the-city of StevensPoint, countyof Poi-tage', State of `Wis`consin, ,have invented certain Improvements iny Stea1n- Bole1s,`ot'Iwhichthe following is aspecication.

I The'first part of our invention relates to improvel ments intheconstruction,icombination, and connections of the'tubnlarV parts yofsteam-boilers, constituted y of. tubes "of smallA diameter, for holdingwater and generating steam, the-improvements.consisting of improvedforms, combinations, and connections of the sections of the'boi'ler,formed` principally of horizontal parts, connected by vertical parts,the sections, so combined `and` connected as to form a tire-box for the-conibnstiouofthe fuel, and a simpleform of "boiler, having` onlyone'combustionfchamber, the forms, combinations, and connections of thesections` l i Hue, for the purpose of retaining the heat.

.The objects ot'` the' rstandsecoud parts of onrinvention are to securesafety from explosion, economy of fuel and space, and forms ofboileradapted to portai p blejpurposes.`

IThe third" part-fof our Vinvention relates to an in-` closure of thetubular parts of 'the boiler.

.This 4inclosure consists of the. combination of the Vtubular `beamswith `tile front and rear plates, by the iauges at fthe. base of vtheplates' forming a `substantial frame, together with the useof plates,attached by vbolts ahdltlanges, on the sides and tops ofthe front andrear plates,'in thefmanner hereinafter described, all `.constructed ofiron, or other metal, forming a strong and symmetrical inclosnre, withcomparativelightness, forthe purposes of supporting the tubular partsand keeping them firmly in place, preventing the lossof heat ,byradiation, as well as Iconfilling the heated air` of thel tire-box,aiiording easy access tothe tubular .partsof lthe boiler, for cleaning`and otherpurposesrandavoiding the use of cumbrous inclosures.

Eescript'ionof the Acconqianying Drawing. y Figure No. 1 `represents afront view ci'` the boiler.

" Figure No. 2 represeutsa rear 'view of the boiler.

Figure No. 3 represents the top of the boiler. Figure No. 4representsthe tubular parts of the l `boiler -in front.`

` Figure No. represents the tubular parts of `the boilcrin rear. Y

` Figure No. 6 represents thev tubular parts of the boiler on the top.

Figure No. 7 represents-the left side of the boiler.

1 Figure No; 8 Vrepresents the tubular parts of the "boiler `on the leftside.

The preceding drawing relates to a form of,v they boiler combining aseries of combustion-chambers .with the tire-box. v

Figure No. 9 represents an intermediate section, in a simple form of theboiler, having only one combustionchamber, as indicated in gs. Nos; 11,12, and 13. r fligurelo. 10 `represents an intermediate section in amodified form of the boiler, having one or more series of horizontalparts, F F', added, for the purposeof forming combustion-chambers incombination with the fire-box, as indicated iniig. No. 8.

. Figure No. 11 represents a section of the boiler in front, in a'.simple form, having only one combustion-r chamber.

-Fignre No.12 represents a section of the same boiler in rear.

Figure No. 13 represents the tubular parts ot' the same on thel leftside.

A is the front plate of the inclosure.

B isthe rear plate.

C C are the plateson the sides and top of the inclosure.

D isthe door of the furnace.

` EE are the tubular beams at the base of the in-` closure for thesupport `of' the front and rear plates, tubular iu form, for the purposeof combining strength and ligh'tnmss,` and with the front and rearplates cony stitutiug the frame of the inclosure.

F F are thelorizoutal parts, and

Gr G the vertical parts of the tubes, for holding' waterand generatingsteam, forming the principal parts of the tire-box for the combustion ofthe fuel, and

4constituting the boiler in a 'simple form, having only onecombustionfchamber, as shown infigs. Nos. 11, 12, and 13.

.Additional tubes, F F', may be inserted `in someof the intermediatesections, as well as the front and rear sections 'of tubes, to vary theform oi' the boiler, one of the variations being shown iniigs. 8 and1(4), forming, in combination with the fire-box above dcscribed, one o1'more series of horizontal tubes, F F', and" forming combustion-chambersor a serpentine ilue,ias shown in iig. 8.

About two-thirds of the lower row of the horizontal parts F, next to thefront plate, are alittle smaller .than the remainder of the part-s ofthe same rownext of permitting the heated air of the furnace to iiow ANDaround the Vertical parts and heat them on all sides, without permittingso much of the radiating heat of the tire-box to pass through among thevertical tubes as to injure the side plates of the inclosure.

The tubes F F and F F', in the front and rear sections of tubes, are alittle separated from each other in their respective sections, for thepurpose of allowing a free circulation of heated air around the tubes,without permitting so much radiating heat from the {ire-box to reach thefront and rear plates as to injure them..

H H are short vertical branches of the lower horizontal tubes F F, withflanges, for the purpose .of couneeting tbe tubular sections by thelower transverse tube O.

N N are vertical branches of the transverse tube O, with a continuousflange, for the purpose of connecting the tubular sections and admittingsupply water.

K is the upper transverse tube, for receiving and holding steam, withvertical branches, I I, and a continuous ange, f, for the purposes otlconnecting the tubular sections at the top, and binding them lirmlytogether, and conduct-ing the steam into the upper transverse tube.

L is the cap of the upper transverse tube l.

M is a flange on the top of the tube K, for attaching a steam domeand-other usual attachments for receiving, regulating, and transmittingsteam from the boiler.

It is the flange on the rear plate, for connecting the chimney of thefurnace.

a a are the flanges at the base of the front plate A.

b b are the flanges at the base of .the rear plate B, for the purposeof-attaehing the front and rear plates to the tubular beams at thc baseot' the inclosure.

c c are the bolts for fastening the parts of the boiler above describedtogether.

g r/ are the flanges at the ends of the horizontal parts F F and F F andthe tops of the vertical parts G'Gr of the tubes.

h h are the caps for closing the ends and tops of tile horizontal andvertical parts of the tubes, the caps being fastened with bolts andcountersunk, makthe heads of the bolts even with the faces of the caps,(omitted in figs. Nos. 6 and 8, in parts of each figure, to show theforms ofthe tubes and flanges.)

l l are flanges on the front and rear plates, for the .purpose ofattaching the side and top plates.

plates, for the support ot' thetubular parts of the boiler.

p is a flange on the inner side of the front plate, opposite the row oftubes F F ou the upper side of the fire-box, in fig. S, to conduct theheated air through the chambers of the furnace or flue.

s and t are ilanges, similar to those last named, on the inner side ofthe rear plates, opposite the lower F', next below the chimney, in tig.8, extending along the whole length ot the tubes, for the purpose ofconducting the smoke and heated air through the chambers ot' thefurnace.

What we claim as our invention, and desire to secure by Letters Patent,is as follows:

1. In combination, the horizontal tubes F and vertical tubes G,surrounding the' fire-box, and .disposed in front, rear, and interveningsections, substantially as described.

2. In combination with the foregoing, one or more series vofL horizontaltubes F', forming combustionchambers or a serpentine flue, substantiallyas described.

3. In combination with the foregoing, the metallic iuclosnre,constructed substantially as and for the purpose set forth.

` WILLIAM WESTON.

WILLIAM R. WESTON.

NATHANIEL ,WESTON BURT BRETT.

Witnesses CHARLES WESTON, ELLEN MURPHY.

on m are lugs on the yinside of the front and rear rowof tubes F F, andopposite .the row of tubes Ft

